Table 5.

Contribution of z-axis to the total. For each feature, the mean ± SD contribution of the z-axis to the feature value is reported.

Feature	Name	z Contribution (%)
Amarh	Area from moving average right hand	36.7 ± 3.4
Amalh	Area from moving average left hand	41.6 ± 5.5
Amarf	Area from moving average right foot	37.9 ± 4.4
Amalf	Area from moving average left foot	35.7 ± 1.4
${\overline{d}}_{rh}$	Intersections mean distance right hand	16.8 ± 6.9
${\overline{d}}_{lh}$	Intersections mean distance left hand	11.3 ± 1.1
${\overline{d}}_{rf}$	Intersections mean distance right foot	16.5 ± 6.2
${\overline{d}}_{lh}$	Intersections mean distance left foot	18.0 ± 4.3
$Ti{n}_{rh}$	Total number of intersections right hand	44.0 ± 10.0
$Ti{n}_{lh}$	Total number of intersections left hand	53.9 ± 2.5
$Ti{n}_{rf}$	Total number of intersections right foot	45.9 ± 10.8
$Ti{n}_{lf}$	Total number of intersections left foot	43.4 ± 8.1
$P_{rh}$	Periodicity right hand	46.2 ± 10.1
$P_{lh}$	Periodicity left hand	52.4 ± 1.7
$P_{rf}$	Periodicity right foot	49.1 ± 11.8
$P_{lf}$	Periodicity left foot	47.2 ± 12.7